National Payments Corporation of India (NPCI) generates around one-third of its revenues from interchange fees, switching fees and other charges.You can read about the National Payments Corporation of India (NPCI) – An Overview of Objectives, Products in the given link.

Further readings:

1. Bad Banks – Idea Proposed by Indian Banking Association (IBA) Due to COVID-19
2. Cashless Economy in India – UPSC GS-III Notes